shark spots

Question
my iridescent shark is starting to get white discoloration, and he has a red blood spot on his mouth. I am afraid that he might be sick.. do u know what i can do to save him

Answer
First and foremost, water change, water change, water change.  Freshwater fish love freshwater. Ideally, we should change 50% of the water in a fish tank once a week.  If you are worried your fish is sick, I would do every 2-3 days a 50% water change.  You could also try some malafix or pimafix as perscribed on the bottle.